A current mode CMOS IC for biological signals measurement in noisy environment

Author

Ayachi, Mohsen ; Zhou, Lingchuan ; Blonde, J.-P.

Author_Institution

CNRS, InESS-ULP, Strasbourg, France

fYear

2008

fDate

14-17 Dec. 2008

Firstpage

248

Lastpage

251

Abstract

This paper describes a novel fully integrated circuit implemented in standard 0.35 Â¿m CMOS technology dedicated to biological signal measurement such as ECG or EEG signals. Based on a new CMOS current conveyor (a low power 60 Â¿A @ Â±1.5 V power supply, 88 Ã— 100 Â¿m² area, 100 MHz bandwidth and 10 GHz equivalent GBW circuit) the instrumentation amplifier used in this IC has a weaker offset and a better CMRR than its equivalent in Voltage mode. In order to totally cancel output offset Voltage and reduce noise, the input signal and output signal of the instrumentation amplifier are chopped at high frequency. The size and the architecture of this IC make biological signal measurement in very hostile environment such MRI, possible.

Keywords

CMOS analogue integrated circuits; electrocardiography; electroencephalography; instrumentation amplifiers; CMOS integrated circuit; ECG signals; EEG signals; biological signals measurement; electrocardiography; electroencephalography; instrumentation amplifier; noisy environment; CMOS integrated circuits; CMOS technology; Current measurement; Instruments; Integrated circuit measurements; Integrated circuit noise; Integrated circuit technology; Measurement standards; Voltage; Working environment noise; CMOS; Chopper stabilized amplifier; Current conveyor; Instrumentation amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics, 2008. ICM 2008. International Conference on

Conference_Location

Sharjah

Print_ISBN

978-1-4244-2369-9

Electronic_ISBN

978-1-4244-2370-5

Type

conf

DOI

10.1109/ICM.2008.5393529

Filename

5393529